@media screen and (max-width: 1520px) {
    .center {
        order:1;
        flex-grow:2;
        flex: none;
        width:800px;
        flex-grow:0;
        flex-shrink:1;
        padding: 0 8px 0 8px;
    }
}

/* 当屏幕宽度小于 600px 时，垂直堆叠显示菜单选项和搜索框 */
@media screen and (max-width: 700px) {
    .live2d-content {
        display: none;
    }
    .left {
        /* background-color:#ccc;*/
        order:0;
        flex: none;
        flex-basis:250px;
        display: none;
    }

    .right {
        order:2;
        flex: none;
        flex-basis:150px;
        display: none;
    }

    .center {
        order:1;
        flex-grow:2;
        flex: none;
        width:100%;
        flex-grow:0;
        flex-shrink:1;
        padding: 0 8px 0 8px;
    }
}